HP StorageWorks 2/64 - Core Switch Reference Manual page 22

Rear of Rack
14
Mount the switch as low as possible in the rack to ensure that
WARNING
the weight of the switch does not make the rack unstable. Fifteen Rack
Units (RUs) are required to accommodate the switch and cable
management.
Figure 4. Switch Mounted Back-to-Front and Low in the Rack
The switch weighs approximately 250 pounds when fully
WARNING
loaded and requires a mechanical lift to move it safely. Move the chassis
slowly and carefully, and continue supporting it with the lift until it is
correctly positioned on the mounting brackets and fastened in the rack.
getting started and general reference guide
Front of Rack
Blower Assembly
Side of the Switch